Geoege thomas claee



(Specimens.)

` MIXED PAINT.

No. 324,230. y y Patented Aug. 11, 1885.

N. Faim Pham-mummy, wuhingwm n. cA

UNITED STATES PATENT OFFICE.

GEORGE THOMAS CLARE, OF JERSEY CITY, NEW JERSEY.

MIXED PAINT.

SPECIFICATION forming part of Letters Patent No. 324,230, dated Augustl1.1 1885- Application filed April 19, 1884.

To all whom it may concern.-

Be it known that I, GEORGE THOMAs CLARE, a citizen of the United States,residing at Jersey City, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements in Printing-Surfaces, both Lithographie and Letter-Press; and I do hereby declarethat the following is a full,

v clear, and exact description of the same, reference being had to theannexed drawings, in which- Figure l is a perspective view in order toillustrate my invention, and Fig. 2 a longitudinal section.

My object is to obtain upon the well-known iron, tin, or zinc plates ofcommerce or any other suitable plate a surface-coating on which designsmay be printed by means of ordinary letter-press and lithograph inexactly the same manner as is now produced on card-board.

The following description will give the several ingredients employed inmy process, together with the manner of compounding and using the same.

I prefer zinc to either iron or tin for at surfaces, or for surfaceswhich are required to be only slightly raised or stamped-such, forinstance, as clock-dials-tin if to be converted into cans or boxes, ironif for advertisingsigns.

In order to illustrate my invention, I have shown a suitable sheet, A,provided with the coating B, and printing-surface C, which will behereinafter described.

I mix of tough varnish three part-s, raw linseed-oil one part, and addany-colored pigment most likely to assist the next operation. With thisI coat the sheet of metal. Up to this point vthere is nothing special,except that a sheet of zinc, tin, or iron has been coated with a pigmentground in varnish and oil; but it is essential to that which follows.vWhen this varnish and oil coat is passed into a low heat, either in anordinary japanners oven or an open warm room,a strong, bright,smooth,andeven tack is produced, and on this I lay my pickingup 7 or printingsurface, which is made as follows: lIf I -require a perfectly whiteenamellooking surface, suitable, say, for clock-dials, I use as thepigment in the varnish and raw linseed-oil tine French zinc-white, andwhen (Specimens.)

the tack comes I lay one or more coats of the following water-mixtures:best French glue, one pound; water, with one ounce glycerine added, tenpounds; blanc fixe, (in pulp,) two pounds; fine clay, one pound. Soakthe glue in half the water; when soft add the other half, heat untildissolved; then add the blanc fixe and clay, and strain. Thiswater-mixture may now be spread on the first or tacky coat by means of asoft brush, and afterward blended down to take out the brush-marks. Theresult is, first, the varnish and oil coat binds firmly on the metal andraises a tack; second, the water-mixture binds firmly on the tackycoating and will not scale off, third, the watermixture coating', whendry, leaves a pickingup surface equal to the finest enamel-paper, y

and may be printed as bythe ordinary lithographic or letter-pressmachines in the ordinary way. The plates may be passed through rollersor not, as may seem necessary; but with ordinary care they will be foundto be smooth enough. Any-colored pigment may be used, as therequirements of the work may call for, and gum of any kind soluble inwater may be substituted for the glue. I have thus given in detail afull description of the several ingredients used in the compoundsemployed in my process, together with the manner of using the 8o same,and the relative proportions of such in`-V gredients which I prefer toadopt; but/ I wish it understood that the proportions may be varied, andtherefore I do not contine myself to them precisely as stated.

What I claim as new, and desire to secure by Letters Patent, is-

The herein-described composition for forming a printing-surface formetal plates, consisting of glue, water, glycerine, blanc fixe, and.clay in substantiallythe proportions named, and adapted to be applied,as set forth, over a coating of varnish and oil, with a colored pigment,for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

GEORGE THOMAS OL ARE.

Vitnesses:

GEORGE H. HOAGLAND, WELMER T. JAHNE.

